This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A329507 #16 Oct 02 2023 15:21:39 %S A329507 1,4,8,12,11,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, %T A329507 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, %U A329507 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8 %N A329507 Expansion of (1 + x)*(1 + 2*x + 2*x^2 + 2*x^3 - 3*x^4) / (1 - x). %H A329507 <a href="/index/Rec#order_01">Index entries for linear recurrences with constant coefficients</a>, signature (1). %F A329507 a(n) = 8 for n >= 5. %o A329507 (PARI) Vec((1 + x)*(1 + 2*x + 2*x^2 + 2*x^3 - 3*x^4) / (1 - x) + O(x^80)) \\ _Colin Barker_, Nov 21 2019 %Y A329507 Row 4 of array in A329504. %K A329507 nonn,easy %O A329507 0,2 %A A329507 _N. J. A. Sloane_, Nov 20 2019